Frankly, I'm not surprised. With the amount of actually gruesome footage shown in mainstream media, and those abominable "here's Mr. Mittens that I saved after somebody threw him into a mud, plz gib upovtes nao!" stories only pretending to be wholesome, we kind of went numb and don't perceive gruesome content as very interesting.
You may try to download this archive and check it for the thread. With some luck, it's there...
What little I remember is that it happened on /x/ (obviously) and either the thread or the guy in talking was named "Vault Dweller". It was taking place so long ago that the name didn't result with immediate "hue, hue, hue, BASEMENT DWELLER, morelike" responses. The story wasn't very complicated, but the guy sounded tired, very tired, like someone on the edge of collapse, or resigned. He claimed that he feels some presence there, in the structure he always lands in when he falls asleep, but he didn't encounter nothing, just empty spaces.
A thread on the 4chn (back in the days when it was still ruled by non-jaded M00t).
There was this guy, who described a place he visited in his dreams every night. It resembled a cross between "House of Leaves" and some prison and the dreamer didn't know what he had to do, but felt that something is required of him. He was part exhausted by the experience, part scared. What struck me was that the guy sounded genuine, and convincing. His testimony was unlike all those abominable greentext edgy bullshit.
The story is now lost to the time, since there's no archive of threads from such ancient past.
I sometimes wonder to this day what did happen to the guy, whether he found the solution to this cruel puzzle, or succumbed to it, thus losing his sanity and possibly life...
Maybe you see things differently, but perhaps there is something more interesting and constructive you could say than: “You both failed at life.”
I certainly see things differently. I see a person who wastes time in the Internet instead of trying to fix what absolutely should be fixed - it's not that we have all the time in the world to make things right. Look at the part you quoted - "before she passes". The guy realizes that the mother may die, but still, talking crap on the Internet seems to him like the better choice to spend the precious time left on.
For me, selecting Internet upvotes, virtual handshakes and high fives by random, anonymous nobodes, over family is certainly within the definition of "failed at life", and I'd sooner bite my own tongue off rather than approach such a person with "interesting and constructive" words.
Overthinking.
Do not do it.